CN108307129A - A kind of multi-channel optical fibre video switching system based on FC-AV agreements - Google Patents
A kind of multi-channel optical fibre video switching system based on FC-AV agreements Download PDFInfo
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- CN108307129A CN108307129A CN201711312762.5A CN201711312762A CN108307129A CN 108307129 A CN108307129 A CN 108307129A CN 201711312762 A CN201711312762 A CN 201711312762A CN 108307129 A CN108307129 A CN 108307129A
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- optical fiber
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/22—Adaptations for optical transmission
Abstract
The invention discloses a kind of multi-channel optical fibre video switching systems based on FC AV agreements, the video switching system includes that video turns optic module, fiber-optic switching module, optical fiber and turns video module, video turns optic module and is connect with fiber-optic switching module by optical fiber, fiber-optic switching module turns video module with optical fiber by optical fiber and connect, and optical fiber turns video module and connect with display and control terminal by video cables；System solves the problem the remote transmission problems of field of video displaying multichannel multi-protocols high-speed video, and the distance of high-speed video Lossless transport is greatly prolonged；Quick real-time handoff functionality of the fiber Video on different displays is realized, video switching time is better than 200ms, realizes video high bandwidth, high reliability, low latency, remote Lossless transport.The system realizes that local picture remote transmission is shown and main facilities multiposition display terminal shows the switching of information and shares and is of great significance for next-generation multipurpose multiple terminals display equipment.
Description
Technical field
The present invention relates to image procossings and technical field of video processing, are one kind based on FC-AV agreements and combine optical fiber logical
News technology realization multi-path high-definition 1080P video source signals are converted into fiber Video and carried out in distal displayed terminal display with
The method quickly switched in real time.
Background technology
It is needed with the continuous development of science and technology with the progress of the different field level of IT application, main facilities or the aobvious control platform of system
The video source category wanted is more and more, such as radar, infrared, meteorological, analog video, high-definition digital video.With in display
Hold becoming increasingly complex, to high image quality, high bandwidth, big flow, can interactive video information demand also more urgently, it is traditional
One-to-one cable video transmission display mode can no longer meet multi-platform different location screen video information sharing in reality
The demand distributed in time on demand with video, interacted, this requires the processing of the video of a new generation and display equipment to have integrated journey
Higher video synthesis is spent to show and distribution, switching capability.For huge and complicated special facilities or system, video is realized
The Long Distant Transmit of information, traditional video cables and video communication protocols much cannot be satisfied requirement, by vision signal
High bandwidth video signals transmission range can theoretically be solved in online be transmitted of gigabit or even 10,000,000,000 by being converted into network signal
Bottleneck, transmission range can be extended to rice up to a hundred, but its transmission cost is very high, signal anti-interference ability is not also strong.With
Optical fiber technology is constantly progressive, and huge numbers of families have gradually been come into optical fiber transmission, gradually becomes network transmission and communication skill
The new lover of art development.Emerging Fiber Video Frequency Transmission technology is developed on the basis of Fibre Optical Communication Technology, and video is believed
Number be converted into fiber optic communication protocol carries out remote transmission on optical cable, and good solution is provided for above-mentioned difficulties.Optical fiber
Transmission mode bandwidth is high, influenced by around environment it is small, transmission range can it is far and also be not in video information decaying,
The problems such as distortion, loss, frame losing, thus obtain more and more attention in next-generation generic video display field.
Fiber Video Frequency Transmission is combined with the video handoff technique flexibly based on optical fiber switch and can be very good reality
Existing vision signal carries out seamless switching between multiple displays of distal end different location, is shown for multipurpose of new generation multiple terminals
The development of technology provides technical support and the motive force of development.In this context, can handle multi-signal video source and can to video into
The integrated method for processing video frequency of row processing in real time and optical fiber conversion comes into being.This method disclosure satisfy that in display ＆ control system to regarding
Frequency high speed, lossless, long-range real-time display and the requirement that display video is switched fast.
Invention content
To solve the deficiencies in the prior art, the present invention provides a kind of multi-channel optical fibre video switching system based on FC-AV agreements
System.The system can realize that multi-path high-definition 1080P video sources carry out remote transmission display through optical fiber and can be regarded to transmission
The video that frequency information is switched in real time is shown.
The technical solution that the present invention solves the technical problem is that a kind of multi-channel optical fibre based on FC-AV agreements of design regards
Frequency switching system, the video switching system include that video turns optic module, fiber-optic switching module, optical fiber and turns video module, three
Module is all made of FPGA as main operational processing unit.Video turns optic module and is connect with fiber-optic switching module by optical fiber,
Fiber-optic switching module turns video module with optical fiber by optical fiber and connect, and optical fiber turns video module and passes through video cables and display and control terminal
Connection.
Video turns optic module and the video source signal of multichannel different agreement is converted to phase using professional video processing chip
The vision signal of same rgb format, vision signal are packaged to form optical fiber according to FC-AV agreements by FPGA processing to video
Video frame, opto-electronic conversion of the video frame through optical module become optical signal and are transferred to fiber-optic switching module by optical fiber link.Light
Fine Switching Module carries out opto-electronic conversion to the multi-channel optical fibre video optical signal of input, then carries out optical fiber parsing, is converted to video
Frame signal is simultaneously cached in DDR memory, and FPGA seals video frame according to the destination address for receiving vision signal again
Dress, is distributed to later in corresponding optical fiber link；Next stage is transferred to by optical fiber from the fiber Video signal after new distribution
Optical fiber turn video module.Optical fiber turns video module reception optical fiber video optical signal and becomes electric signal by opto-electronic conversion, it
The vision signal that frame parsing is reduced to rgb format is carried out by FPGA afterwards, rgb video signal is converted to display using special chip
The corresponding video format that device can identify finally sends the video converted to display by dedicated video cable, and reduction regards
The video information of frequency source transmission.
Said program provides feasible method for realization multipath high-speed video information remote transmission.By turning light in video
The destination address to be sent to vision signal in fiber module is modified the switching that video may be implemented on different displays
Function.
Compared with prior art, the beneficial effects of the present invention are the present invention is based on the multi-channel optical fibre videos of FC-AV agreements
Switching system solves the problems, such as the remote transmission of field of video displaying multichannel multi-protocols high-speed video, and high-speed video is lossless
The distance of transmission greatly prolongs；Quick real-time handoff functionality of the fiber Video on different displays is realized, when video switches
Between be better than 200ms, realize video high bandwidth, high reliability, low latency, remote Lossless transport.The system is for the next generation
Multipurpose multiple terminals shows that equipment realizes that local picture remote transmission is shown and main facilities multiposition display terminal shows information
Switching and shared be of great significance.
Description of the drawings
Fig. 1 is the general frame of an embodiment of the present invention.
Fig. 2 is each intermodule relational graph inside the FPGA of an embodiment of the present invention.
Specific implementation mode
Below with reference to attached drawing, the present invention is described further, but the protection model of the present invention should not be limited with this
It encloses.
The present invention provides a kind of multi-channel optical fibre video switching system based on FC-AV agreements, which includes
Video turns optic module, fiber-optic switching module, optical fiber and turns video module, and three modules are all made of FPGA as main operational processing
Unit.Video turns optic module and is connect with fiber-optic switching module by optical fiber, and fiber-optic switching module turns to regard by optical fiber with optical fiber
Frequency module connects, and optical fiber turns video module and connect with display and control terminal by video cables.
The video turns optic module and video source signal is converted into fiber Video signal.For the vision signal of input,
Video is turned optic module and is transcoded into the digital video signal of VESA standards using dedicated video decoding chip, and is passed to
Inside FPGA.FPGA is realized using its parallel processing capability and numerous configurable I/O interfaces to more as core processing unit
The acquisition and parsing of road high speed digital video signal.Video encapsulation is FC-AV frames according to FC-AV agreements and built by FPGA later
Vertical link transmission data frame.It is carried out according to the containment system format of FC-AV agreements when encapsulation, addition includes the container of auxiliary information
Head and the object data comprising effective information.The FC-AV video frame completed is handled by the high speed GTX channel transfers of FPGA to light
Module.After the opto-electronic conversion of optical module, video information is converted to optical signal, and is transmitted by optical fiber.
The fiber-optic switching module receives video and turns the multi-channel optical fibre vision signal that optic module sends over, by optical mode
Block carries out that high speed serialization video data is transferred to FPGA by GTX after opto-electronic conversion, FPGA by data buffer storage to DDR, and
The vision signal and its destination address that are carried on every road optical fiber are parsed；FPGA, will according to the destination address of acquisition later
Vision signal after parsing is Resealed into according to FC-AV agreements and is sent by the high speed serialization GTX modules of FPGA after video frame
To the optical module at corresponding destination address.Optical module is sent to distally after being converted to the high-speed video frame received by optical fiber
Optical fiber turn video module.
Each display and control terminal is equipped with a unjacketed optical fiber and turns video module, and video on optical fiber link all the way is believed in module completion
Number opto-electronic conversion, frame parsing and by fiber Video be reduced into various protocols digital video signal export, the conversion of the module
Process is the inverse process that video turns optic module.Transformed video may be coupled in the display and control terminal with corresponding interface,
Realize the display function to video source video information.
Three above-mentioned modules have all used the fiber Video conversion function based on FPGA.The part realizes building for link
Vertical and maintenance, completes the acquisition and extraction to link data, while user-defined data being sent, certainly most important
It can be achieved on periodicity and on time target sending function.The function module of FPGA includes mainly optical module (SFP interfaces), GTX
Module, word synchronization module, link establishment module, sending module, frame parsing and processing module and frame package module, it is main to realize
The partial function of FC-0, FC-1 and FC-2, each intermodule relationship are as shown in Figure 2.Wherein optical module has selected four transmitting-receivings of 158 factories
Optical module HTA8525, realization photoelectric converting function, i.e., be converted into optical signal by serial bit stream electric signal and send, or
Optical signal on optical fiber link is converted into serial bit stream electric signal by person；FPGA has selected the K7 series of Xilinx companies high
Performance FPGA products XC7K325T-2FFG900, GTX module, which is integrated among FPGA, mainly realizes that serioparallel exchange, 8B/10B compile solution
The functions such as code, the byte code that 8B/10B encoding and decoding form 8 bits are received at a transmission character of 10 bits
When contrary operation be decoded；Word synchronization module realized by FPGA inside programmings, it is main complete byte of sync and to byte into
The function of row recombination, word synchronization module receive the transmitting data in parallel of 16 bits from GTX modules, wait for by synchronous state machine
It redirects after realization synchronizes, gives effective transmission word to link establishment module；Link establishment module is real by FPGA inside programmings
Existing, the function of the main link establishment completed between other ports and maintenance link, link establishment resume module is synchronous
Transmission word afterwards will send effective transmission word to link establishment module after word synchronization module, which completes word, to be synchronized, and by
The latter completes the foundation of link between the ports FC, and after link establishment, the ports FC of both link ends are all in state of activation, at this time
Data and control information can be transmitted between the ports FC, link establishment process is by passing through one system of interaction between two ports FC
The primitive sequence of row and so that both sides is reached state of activation；Sending module is realized by FPGA inside programmings, main to complete primitive portion
Divide the sending function with data frame part, wherein primitive part includes primitive sequence and Primitive signal, and primitive sequence is mainly used to
The relevant function of link establishment is completed, and Primitive signal is mainly used to complete the function of flow control, sending module application state machine comes
Realize that dispatcher primitive and data are sent on GTX；It is real that frame parsing and processing module and frame package module pass through FPGA inside programmings
Existing, the main receive capabilities for completing data go out effective data frame from the extracting data of reception, with frame head delimiter SOF and
Frame end delimiter EOF is that landmark identification goes out frame, carries out length and judges to handle with CRC check and parse corresponding frame field, finally
Frame and descriptor are sent to and receive in FIFO by the descriptor for constructing frame respectively.These volumes of example in the top-level module of FPGA
The submodule of Cheng Shixian and the function of realizing flow control.The collaborative work of above-mentioned module completes video information root inside FPGA
According to the conversion and transmission of video protocols.
The present invention does not address place and is suitable for the prior art.
Claims (3)
1. a kind of multi-channel optical fibre video switching system based on FC-AV agreements, which is characterized in that the video switching system includes regarding
Frequency turns optic module, fiber-optic switching module, optical fiber and turns video module, and it is single as main operational processing that three modules are all made of FPGA
Member；Video turns optic module and is connect with fiber-optic switching module by optical fiber, and fiber-optic switching module turns video by optical fiber and optical fiber
Module connects, and optical fiber turns video module and connect with display and control terminal by video cables；
The video turns optic module and video source signal is converted into fiber Video signal；For the vision signal of input, video
Turn optic module and be transcoded into the digital video signal of VESA standards using dedicated video decoding chip, and is passed in FPGA
Portion；FPGA is realized using its parallel processing capability and numerous configurable I/O interfaces to multipath high-speed as core processing unit
The acquisition and parsing of digital video signal；Video encapsulation is FC-AV frames according to FC-AV agreements and establishes link by FPGA later
Transmission data frame；It is carried out according to the containment system format of FC-AV agreements when encapsulation, addition includes the vessel head and packet of auxiliary information
Object data containing effective information；The FC-AV video frame completed is handled by the high speed GTX channel transfers of FPGA to optical module；
After the opto-electronic conversion of optical module, video information is converted to optical signal, and is transmitted by optical fiber；
The fiber-optic switching module receives video and turns the multi-channel optical fibre vision signal that optic module sends over, by optical module into
High speed serialization video data is transferred to FPGA by GTX after row opto-electronic conversion, FPGA is by data buffer storage to DDR, and to every
The vision signal and its destination address carried on the optical fiber of road is parsed；FPGA will be parsed according to the destination address of acquisition later
Vision signal afterwards Reseals into according to FC-AV agreements and is sent to phase by the high speed serialization GTX modules of FPGA after video frame
Answer the optical module at destination address；Optical module is sent to the light of distal end by optical fiber after being converted to the high-speed video frame received
Fibre turns video module；
Each display and control terminal is equipped with a unjacketed optical fiber and turns video module, which completes to vision signal on optical fiber link all the way
Opto-electronic conversion, frame parsing and the digital video signal output that fiber Video is reduced into various protocols, the transfer process of the module
Turn the inverse process of optic module for video；Transformed video may be coupled in the display and control terminal with corresponding interface, realize
To the display function of video source video information.
2. a kind of multi-channel optical fibre video switching system based on FC-AV agreements according to claim 1, which is characterized in that
The function module of the FPGA includes optical module, GTX modules, word synchronization module, link establishment module, sending module, frame parsing
With processing module and frame package module, the partial function of FC-0, FC-1 and FC-2 are mainly realized；The optical module realizes photoelectricity
Serial bit stream electric signal is converted into optical signal and sent by conversion function, or by the optical signal on optical fiber link
It is converted into serial bit stream electric signal；
FPGA is that K7 series high-performance FPGA products XC7K325T-2FFG900, the GTX modules of Xilinx companies are integrated in FPGA
Among, realize that serioparallel exchange, 8B/10B codec functions, 8B/10B encoding and decoding are a byte code for forming 8 bits
At a transmission character of 10 bits, contrary operation is decoded when reception；Word synchronization module realized by FPGA inside programmings,
It completes byte of sync and byte is recombinated, word synchronization module receives the transmitting data in parallel of 16 bits from GTX modules, waits for
By redirecting after realization synchronizes for synchronous state machine, effective transmission word is given to link establishment module；Link establishment module is logical
Cross the function of the realization of FPGA inside programmings, the main link establishment completed between other ports and maintenance link, link establishment
Resume module is transmission word after synchronizing, after word synchronization module, which completes word, to be synchronized, will be sent effective transmission word to
Link establishment module, and by the foundation of link between the ports the latter completion FC；After link establishment, the ports FC of both link ends are all
It is active, data and control information can be transmitted between the ports FC at this time, link establishment process is by two ports FC
Between so that both sides is reached state of activation by a series of primitive sequence of interaction；Sending module is real by FPGA inside programmings
Existing, the main sending function for completing primitive part and data frame part, wherein primitive part include primitive sequence and Primitive signal,
Primitive sequence is mainly used to complete the relevant function of link establishment, and Primitive signal is mainly used to complete the function of flow control, sends
Module application state machine realizes that dispatcher primitive and data are sent on GTX；Frame parsing and processing module and frame package module are logical
The realization of FPGA inside programmings is crossed, the main receive capabilities for completing data go out effective data frame from the extracting data of reception, with
Frame head delimiter SOF and frame end delimiter EOF is that landmark identification goes out frame, carries out length and judges to handle with CRC check and solve phase separation
The frame field answered, finally constructs the descriptor of frame, and frame and descriptor are sent to respectively and received in FIFO；The top-level module of FPGA
Submodule that these programmings of middle example are realized and the function of realizing flow control；The collaborative work of above-mentioned module completes video letter
Breath is inside FPGA according to the conversion of video protocols and transmission.
3. a kind of multi-channel optical fibre video switching system based on FC-AV agreements according to claim 2, which is characterized in that
The optical module is four emission and reception module HTA8525 of 158 factories.
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| CN109451250A (en) * | 2018-11-02 | 2019-03-08 | 天津津航计算技术研究所 | The switching of multi-channel optical fibre high-speed video and self-checking unit |
| CN109995423A (en) * | 2019-03-12 | 2019-07-09 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of FC-AE-ASM parallel redundant system and its data processing method |
| CN110049295A (en) * | 2019-04-18 | 2019-07-23 | 大连集思特科技有限公司 | A kind of single fiber multi-channel video transmission receiver |
| CN110855910A (en) * | 2019-11-18 | 2020-02-28 | 天津津航计算技术研究所 | Multi-screen splicing system based on FC-AV protocol |
| CN110896431A (en) * | 2019-12-23 | 2020-03-20 | 中国电子科技集团公司第三十四研究所 | Uncompressed high-definition video transmission method and system |
| CN110958405A (en) * | 2019-11-22 | 2020-04-03 | 中船重工（武汉）凌久电子有限责任公司 | Ultra-high-definition display control system and method based on optical fiber encoding and decoding 4Kx2K |
| CN111258946A (en) * | 2019-12-03 | 2020-06-09 | 湖南迈克森伟电子科技有限公司 | Communication method of GTX and TLK2711 series chips |
| CN111343518A (en) * | 2020-02-07 | 2020-06-26 | 云南电网有限责任公司电力科学研究院 | Signal exchange system based on optical fiber equipment transmission |
| CN111669520A (en) * | 2020-06-16 | 2020-09-15 | 中国北方车辆研究所 | Video sharing general optical fiber transmission structure |
| CN112491474A (en) * | 2019-09-11 | 2021-03-12 | 李冰 | Method and frame structure for serial transmission after multiplexing of HDMI low-speed signals |
| CN112788429A (en) * | 2021-02-25 | 2021-05-11 | 中国电子科技集团公司第五十二研究所 | Screen sharing system based on network |
| CN116193057A (en) * | 2023-04-26 | 2023-05-30 | 广东视腾电子科技有限公司 | Multi-port transmission optical fiber video extension method and system |
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| CN117119157B (en) * | 2023-08-17 | 2024-05-03 | 广东保伦电子股份有限公司 | Multi-picture splicing retransmission method and system for optical fiber video seat |
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| CN109451250A (en) * | 2018-11-02 | 2019-03-08 | 天津津航计算技术研究所 | The switching of multi-channel optical fibre high-speed video and self-checking unit |
| CN109995423A (en) * | 2019-03-12 | 2019-07-09 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of FC-AE-ASM parallel redundant system and its data processing method |
| CN110049295A (en) * | 2019-04-18 | 2019-07-23 | 大连集思特科技有限公司 | A kind of single fiber multi-channel video transmission receiver |
| CN112491474B (en) * | 2019-09-11 | 2022-02-11 | 李冰 | Method and frame structure for serial transmission after multiplexing of HDMI low-speed signals |
| CN112491474A (en) * | 2019-09-11 | 2021-03-12 | 李冰 | Method and frame structure for serial transmission after multiplexing of HDMI low-speed signals |
| CN110855910A (en) * | 2019-11-18 | 2020-02-28 | 天津津航计算技术研究所 | Multi-screen splicing system based on FC-AV protocol |
| CN110958405A (en) * | 2019-11-22 | 2020-04-03 | 中船重工（武汉）凌久电子有限责任公司 | Ultra-high-definition display control system and method based on optical fiber encoding and decoding 4Kx2K |
| CN111258946A (en) * | 2019-12-03 | 2020-06-09 | 湖南迈克森伟电子科技有限公司 | Communication method of GTX and TLK2711 series chips |
| CN110896431A (en) * | 2019-12-23 | 2020-03-20 | 中国电子科技集团公司第三十四研究所 | Uncompressed high-definition video transmission method and system |
| CN110896431B (en) * | 2019-12-23 | 2023-12-29 | 中国电子科技集团公司第三十四研究所 | Non-compression high-definition video transmission method and system |
| CN111343518A (en) * | 2020-02-07 | 2020-06-26 | 云南电网有限责任公司电力科学研究院 | Signal exchange system based on optical fiber equipment transmission |
| CN111669520A (en) * | 2020-06-16 | 2020-09-15 | 中国北方车辆研究所 | Video sharing general optical fiber transmission structure |
| CN111669520B (en) * | 2020-06-16 | 2022-09-30 | 中国北方车辆研究所 | Video sharing general optical fiber transmission structure |
| CN112788429A (en) * | 2021-02-25 | 2021-05-11 | 中国电子科技集团公司第五十二研究所 | Screen sharing system based on network |
| CN116193057A (en) * | 2023-04-26 | 2023-05-30 | 广东视腾电子科技有限公司 | Multi-port transmission optical fiber video extension method and system |
| CN116193057B (en) * | 2023-04-26 | 2023-07-07 | 广东视腾电子科技有限公司 | Multi-port transmission optical fiber video extension method and system |
| CN117119157A (en) * | 2023-08-17 | 2023-11-24 | 广东保伦电子股份有限公司 | Multi-picture splicing retransmission method and system for optical fiber video seat |
| CN117119157B (en) * | 2023-08-17 | 2024-05-03 | 广东保伦电子股份有限公司 | Multi-picture splicing retransmission method and system for optical fiber video seat |
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Application publication date: 20180720 |